So I had these installed yesterday. All I can say is that this exhaust is absolutely freakin ridiculous. I love it. Baffles closed no to little drone, open is just epic. In sport or track mode on the down shifts it pops too. Just started manually shifting here And there to make my own note . The Axle back, x pipe and cai defiantly feels like I picked up some good power. Truck feels faster in 70 degree weather vs 30's when stock. Not sure what mod gave more as both were done together. I do think it's at 500hp crank imo. I also noticed a slight up tick in mpg when not trying to wake the neighborhood . Anyone on the fence about this exhaust I say go for it. It's expensive but my god what a sound. Remote also works great. Jim